#[macro_use] use xuanmi_base_support::*; 
use serde_json;

pub fn objectToJson<T>(
    obj: &T
) -> Outcome<String> where T: Serialize {
    let json: String = serde_json::to_string(obj)
    .catch( // 取代unwrap
        // EXN是模块名. 我在模块EXN里定义了许多Exception名称
        EXN::SerializationException, 
        // 上下文信息
        &format!("Failed to convert object of type `{}` to JSON string", std::any::type_name::<T>()),
    )?;
    Ok(json)
}

#[macro_use] use xuanmi_base_support::*; 

fn div() -> Outcome<f64> {
    let (a, b): (f64, f64) = (1.0, 0.0);
    let eps: f64 = 1.0 / 4096.0;
    if b.abs() < eps {
        throw!( // 取代panic或assert
            name=EXN::ArithmeticException,
            ctx=&format!("Cannot divide a={:.4} by b={:.4}", a, b)
        );
    } else {
        return Ok(a/b);
    }
}

use serde::{Serialize, Deserialize};

#[derive(Debug, Clone, Serialize, Deserialize)]
struct MyRequest {
    uname: String,
    email: String,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
struct MyResponse {
    a: String,
    b: String,
}

#[macro_use] use xuanmi_base_support::*;

fn test_http_post() -> Outcome<MyResponse> {
    let req = MyRequest {
        uname: "xuanmi".to_string(),
        email: "[email protected]".to_string(),
    };
    let url = "http://localhost:50000/test";
    let resp: MyResponse = http_post(url, &req).catch(
    	name=EXN::HttpPostException,
    	ctx=&format!("Failed to post to {}", url)
    )?;
    // do something else ...
    Ok(resp)
}